M81 (below) and M82 (top) make one of the
more famous pair of galaxys: their distance in the sky is only 38', so
it's possible to observe both in the same eyepiece field at the telescope.
They are in Ursa Major.
|
Technical Data
|
| Optics |
Pentax 75 apochromatic
refractor |
| Focal Lenght |
500 mm |
| Focal Ratio |
f/6,7 |
| Exposure Time |
45 min exposure |
| Film |
Kodak E200 |
| Developement sensibility |
320 ISO |
| Location |
Capanne di Cosola (AL,
on the Appenninus, Italy) at 1500m |
| Date and time of exposure
start |
14 may 2002, 22.28 UT |
| Mount |
Gemini G41 |
| Tracking |
ST4 |
| Temperature and humidity |
T=+7°C, RH=54% |
| Notes |
Enlargement of the slide |
